> [Introduced]( https://gitlab.com/gitlab-org/gitlab/-/merge_requests/28369) in GitLab 12.10.
## Replica checksums
Prints out checksums of the repository of a given project_id on the primary as well as secondary internal Gitaly nodes.
NOTE: **Note:**
This only is relevant and works for projects that have been created on a praefect storage. See the [Praefect Documentation](../gitaly/praefect.md) for configuring Praefect.